The obstination of a tiny stream that has dug a passage in the marble limestone rock face over thousands of years has left us one of the narrowest gorges in the world.
1700 metres long, with, in some places, a depth of some 250 metres, this geographical site is the most visited place in the area.
Protected by a metallic net and thanks to gangplanks installed throughout, any family can, in all safety, walk through the gorges. A Dantesque crack which has led to many legends.